/*
 * Copyright 2018 Netflix, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.netflix.spinnaker.clouddriver.scattergather

import java.io.Writer
import javax.servlet.http.HttpServletResponse

/**
 * The result object of a Scatter Gather operation.
 *
 * TODO(rz): Add `message` attribute to allow reducers to pass client-facing errors
 */
data class ReducedResponse(
  val status: Int,
  val headers: Map<String, String>,
  val contentType: String,
  val characterEncoding: String,
  val body: String?,
  val isError: Boolean
) {

  fun applyTo(response: HttpServletResponse): Writer {
    response.status = status
    response.contentType = contentType
    response.characterEncoding = characterEncoding
    response.setContentLength(body?.length ?: -1)

    headers.forEach {
      response.setHeader(it.key, it.value)
    }

    return response.writer.apply {
      print(body)
    }
  }
}
